(19)

(11)

EP 0 436 700 A1

(12)

(43) Date of publication: 17.07.1991 Bulletin 1991/29 (21) Application number: 90911545.0 (22) Date of filing: 30.07.1990

(51) International Patent Classification (IPC):  A61B 8/ 12( . ) A61B 18/ 22( . ) A61B 18/ 24( . ) A61B 19/ 00( . ) (86) International application number: PCT/US1990/004249 (87) International publication number: WO 1991/001687 (21.02.1991 Gazette 1991/05)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IT LI LU NL SE (30) Priority: 31.07.1989 US 19890387949 (71) Applicant: BARKEN, Israel San Diego, CA 92120 (US)	(72) Inventor: BARKEN, Israel San Diego, CA 92120 (US) (74) Representative: Coxon, Philip  Eric Potter & Clarkson St. Mary's Court St. Mary's Gate Nottingham NG1 1LE Nottingham NG1 1LE (GB)